Add reverse Index map to ITensorNetwork; drop preserve_graph and fix_edges!#365

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mtfishman merged 10 commits into

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mf/itensornetwork-redesign

May 12, 2026

Commits on May 12, 2026

Add reverse Index map to ITensorNetwork; drop preserve_graph / fix_edges!
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Replace ITensorNetwork DataGraph storage with NamedGraph + Dict fields

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Inline TreeTensorNetwork storage; drop similar_graph / empty-state paths

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Drop _TreeTensorNetwork inner ctor; share unregister-inds helper

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Cut down ITN and TTN constructor surface

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Add empty ITensorNetwork / TreeTensorNetwork constructors

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Simplify TreeTensorNetwork(ITensorNetwork{Any}(tensors)) test pattern

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Inline tensor collection in TreeTensorNetwork docstring example

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Drop TreeTensorNetwork ortho_region kwarg and redundant set_vertices_data!

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Fix docs build: drop ITensorNetwork(tensors, graph) calls

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